CorePlot - Expected Token Before '@' token

问题

I am trying to incorporate CorePlot into my project. I finally manages to get my header files recognized but i keep getting the following error in my main.m.

"Expected expression before '@' token"

int main(int argc, char *argv[])
{ 
    @autoreleasepool { 
    return UIApplicationMain(argc, argv, nil, NSStringFromClass([ProjectFiveAppDelegate     class]));
    }
}

回答1:

The @autoreleasepool syntax was introduced fairly recently, you probably need to install Xcode 4.2. Another possibility is that your compiler is set to GCC which AFAIK doesn't support those newer Objective-C changes.

If this is the only place where newer Objective-C extensions are used, you can simply change it to

NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
int retVal = UIApplicationMain( ...
[pool release];
return retVal;

来源：https://stackoverflow.com/questions/8553278/coreplot-expected-token-before-token